You are Ur'shal, Chieftain of the Stonetusk Clan, Warlord of the Wastes, and dragonslayer. A young and rather pathetic example of his kind perhaps, but a dragon nonetheless. With Slaagyr dead, it should be a matter of simply mopping up what remains of his forces or demanding their surrender, though you've still yet to see any sign of Joachim since your arrival in Slaagyr's lair. Perhaps the cannibal priest has decided to cut his losses and flee with the death of his master, though something tells you that you haven't heard the last of him one way or another.
For now, you have been exploring what remains of Slaagyr's lair, which has proven rather pokey for the lair of a dragon, though again you can't say you think Slaagyr ranked very high in draconic circles. What you did find however, beyond his library, storeroom, trophy room and mound of treasure, was a pair of very unusual chambers just beyond the cell which held his guest, or pet, Sofie.
Both seem to radiate magic enough that even one as magically inept as you can feel it prickling in the air, and the more ominous of the two chambers left you with a painful gnawing in your gut and a heavy nosebleed just from stepping through the door. Not particularly eager to look into it any more yourself, you have instead settled for calling upon those in your war party with a little more knowledge of such matters.
Bra'kur, Aza'ra, Isyil and the coven have congregated at the end of the corridor, Aza'ra and Isyil muttering between themselves as they peer into the darker room while the coven and Bra'kur chatter away about the crystalline one. From the sound of it, both have some ideas of what these things might be, or might have been at least, even if most of the details are going completely over your head.
So the question is which group you wish to demand explain it to you in mundane terms first.
>Ask about the dark room
>Ask about the crystalline room